will my grandpa still treat me like a kid?

in 2019 when i will go to Falakata i will be 18 and i will definitely act childish like how i used to act like running while walking with him and making noises. until 2017 when i was 16 he used to treat me like a kid because i was a minor eventhough he told people i am only physically 16 but mentally still 6. but at 18 idk whether he will treat me like a kid or not because i will be 18